期刊
ARABIAN JOURNAL OF CHEMISTRY
卷 13, 期 1, 页码 17-26出版社
ELSEVIER
DOI: 10.1016/j.arabjc.2017.01.006
关键词
Antioxidant activity; Myeloperoxidase; Scavenging effect; Structure-activity relationships; Xanthones
资金
- Structured Program of R&D&I INNOVMAR -Innovation and Sustainability in the Management and Exploitation of Marine Resources - Northern Regional Operational Programme (NORTE2020) through the European Regional Development Fund (ERDF) [NORTE-01-0145-FEDER-000035]
- Foundation for Science and Technology (FCT) - Portugal [PTDC/MAR-BIO/4694/2014 (POCI-01-0145-FEDER-016790), PTDC/DTP-FTO/1981/2014 (POCI-01-0145-FEDER-016581), PTDC/AAGTEC/0739/2014 (POCI-01-0145-FEDER-016793)]
- COMPETE [PTDC/MAR-BIO/4694/2014 (POCI-01-0145-FEDER-016790), PTDC/DTP-FTO/1981/2014 (POCI-01-0145-FEDER-016581), PTDC/AAGTEC/0739/2014 (POCI-01-0145-FEDER-016793)]
- POPH/FSE
- FCT [SFRH/BPD/38939/2007]
- CESPU - Portugal [04-GCQF-CICS2011N, COXANT-CESPU 2016]
- Fundação para a Ciência e a Tecnologia [SFRH/BPD/38939/2007] Funding Source: FCT
Many natural products play important roles as antioxidants and represent useful scaffolds for the development of new agents. Particularly, polyphenols in which oxygenated xanthones can be included have proven their efficacy as antioxidants for several applications. To better understand the antioxidant potential of oxygenated xanthones, a library of twenty mono and di-oxygenated xanthones was investigated. The antioxidant properties were evaluated by their 2,2-diphenyl-1-picrylhydrazyl (DPPH) and peroxyl radical scavenging effect as well as their inhibitory effect on the prooxidant enzyme myeloperoxidase (MPO). A quantitative structure-activity relationship (QSAR) model predicted the maximal atomic partial charge (Qmax) as the descriptor being implied in the antioxidant activity of the referred xanthones. From the antioxidant screening, emerged the hit compound, 1,2-dihydroxyxanthone (10), that was further characterized for its chelating properties and its effect on a human keratinocyte cell line. Taken together, the results suggest the possible effectiveness of xanthone derivatives as antioxidants with potential for topical administration. (C) 2017 The Authors. Production and hosting by Elsevier B.V. on behalf of King Saud University.
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